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Updated: Oct 26, 2025
Spatial and Temporal Analysis of Active ERK in the C. elegans Germline
Published on: November 29, 2016
Shedding light on developmental ERK signaling with genetically encoded biosensors
Akinobu Nakamura1,2, Yuhei Goto1,2,3, Yohei Kondo1,2,3
1Division of Quantitative Biology, National Institute for Basic Biology, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi 444-8787, Japan.
Abstract:
The extracellular signal-regulated kinase (ERK) pathway governs cell proliferation, differentiation and migration, and therefore plays key roles in various developmental and regenerative processes. Recent advances in genetically encoded fluorescent biosensors have unveiled hitherto unrecognized ERK activation dynamics in space and time and their functional importance mainly in cultured cells. However, ERK dynamics during embryonic development have still only been visualized in limited numbers of model organisms, and we are far from a sufficient understanding of the roles played by developmental ERK dynamics. In this Review, we first provide an overview of the biosensors used for visualization of ERK activity in live cells. Second, we highlight the applications of the biosensors to developmental studies of model organisms and discuss the current understanding of how ERK dynamics are encoded and decoded for cell fate decision-making.
Insights
Genetically encoded biosensors reveal crucial extracellular signal-regulated kinase (ERK) pathway dynamics during embryonic development. Understanding these ERK signals is vital for deciphering cell fate decisions and developmental processes.
Area of Science:
- Molecular Biology
- Developmental Biology
- Cell Signaling
Background:
- The extracellular signal-regulated kinase (ERK) pathway regulates fundamental cellular processes including proliferation, differentiation, and migration.
- ERK pathway signaling is critical for embryonic development and tissue regeneration.
- Recent advancements in fluorescent biosensors have enabled visualization of ERK activity in cultured cells, but in vivo developmental dynamics remain underexplored.
Purpose of the Study:
- To review the use of genetically encoded fluorescent biosensors for visualizing ERK activity in live cells.
- To highlight the application of these biosensors in studying embryonic development across various model organisms.
- To discuss the current understanding of how ERK dynamics are encoded and decoded to influence cell fate decisions during development.
Main Methods:
- Overview of genetically encoded fluorescent biosensors designed for detecting ERK pathway activation.
- Compilation and analysis of studies utilizing these biosensors in live-cell imaging and model organisms.
- Literature review focusing on the interpretation of ERK activation dynamics in developmental contexts.
Main Results:
- Biosensors have revealed previously unrecognized spatial and temporal dynamics of ERK activation.
- These dynamics have been visualized in limited model organisms, providing initial insights into their developmental roles.
- ERK dynamics are increasingly understood to play significant roles in cell fate determination.
Conclusions:
- Genetically encoded biosensors are powerful tools for dissecting ERK pathway dynamics during embryonic development.
- Further research is needed to fully elucidate the functional significance of developmental ERK dynamics across diverse organisms.
- Understanding ERK signal encoding and decoding is key to comprehending developmental processes and potential therapeutic interventions.
